Addended vs Appended - What's the difference?

As verbs the difference between addended and appended

is that addended is past tense of addend while appended is past tense of append.

is furnished with an addendum.

(head)

(addend)

(en adjective)

Furnished with an addendum

(organic chemistry) Furnished with an addend

(head)

(append)

(en verb)

To hang or attach to, as by a string, so that the thing is suspended; as, a seal appended to a record; the inscription was appended to the column.

To add, as an accessory to the principal thing; to annex; as, notes appended to this chapter.

(computing) To write more data to the end of a pre-existing file.

* prepend

(en noun)

(computing) An instance of writing more data to the end of an existing file.